<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #g{color: green}
        .z{color: yellow}
        input[type = "text"],body>p{background-color: red}
        body > div > div  > p{color: pink}
        body div div p {background-color: yellow}
        a:link{color: green}
        a:visited{color: red}
        a:hover{color: yellow}
        a:active{color: pink}

    </style>
</head>
<body>
<lu>
    <li>刘备</li>
    <li id="g">关羽</li>
    <li class="z">张飞</li>
</lu>
<p >香蕉</p>
<p class="z" >苹果</p>
<input type="text">
<input type="password">
<div>
    <p>p1</p>
    <div><p>p2</p></div>
    <div>
        <div><p>p3</p></div>
    </div>
    <a href="http://www.tedu.cn">达内官网</a>
</div>
</body>
</html>